Integrand size = 17, antiderivative size = 152 \[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=-\frac {\arctan \left (\frac {\sqrt [4]{2} x}{\sqrt [4]{1+x^8}}\right )}{4 \sqrt [4]{2}}+\frac {\arctan \left (\frac {2^{3/4} x \sqrt [4]{1+x^8}}{\sqrt {2} x^2-\sqrt {1+x^8}}\right )}{4\ 2^{3/4}}-\frac {\text {arctanh}\left (\frac {\sqrt [4]{2} x}{\sqrt [4]{1+x^8}}\right )}{4 \sqrt [4]{2}}-\frac {\text {arctanh}\left (\frac {2 \sqrt [4]{2} x \sqrt [4]{1+x^8}}{2 x^2+\sqrt {2} \sqrt {1+x^8}}\right )}{4\ 2^{3/4}} \]
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Result contains higher order function than in optimal. Order 6 vs. order 3 in optimal.
Time = 0.01 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.14, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.059, Rules used = {440} \[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=-x \operatorname {AppellF1}\left (\frac {1}{8},1,-\frac {3}{4},\frac {9}{8},x^8,-x^8\right ) \]
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Rule 440
Rubi steps \begin{align*} \text {integral}& = -x \operatorname {AppellF1}\left (\frac {1}{8},1,-\frac {3}{4},\frac {9}{8},x^8,-x^8\right ) \\ \end{align*}
Time = 0.48 (sec) , antiderivative size = 139, normalized size of antiderivative = 0.91 \[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=-\frac {\sqrt {2} \arctan \left (\frac {\sqrt [4]{2} x}{\sqrt [4]{1+x^8}}\right )-\arctan \left (\frac {2^{3/4} x \sqrt [4]{1+x^8}}{\sqrt {2} x^2-\sqrt {1+x^8}}\right )+\sqrt {2} \text {arctanh}\left (\frac {\sqrt [4]{2} x}{\sqrt [4]{1+x^8}}\right )+\text {arctanh}\left (\frac {2 \sqrt [4]{2} x \sqrt [4]{1+x^8}}{2 x^2+\sqrt {2} \sqrt {1+x^8}}\right )}{4\ 2^{3/4}} \]
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Time = 24.62 (sec) , antiderivative size = 165, normalized size of antiderivative = 1.09
method | result | size |
pseudoelliptic | \(\frac {2^{\frac {1}{4}} \left (2 \arctan \left (\frac {\left (x^{8}+1\right )^{\frac {1}{4}} 2^{\frac {3}{4}}}{2 x}\right ) \sqrt {2}-\ln \left (\frac {2^{\frac {1}{4}} x +\left (x^{8}+1\right )^{\frac {1}{4}}}{-2^{\frac {1}{4}} x +\left (x^{8}+1\right )^{\frac {1}{4}}}\right ) \sqrt {2}+\ln \left (\frac {-\left (x^{8}+1\right )^{\frac {1}{4}} 2^{\frac {3}{4}} x +\sqrt {2}\, x^{2}+\sqrt {x^{8}+1}}{\left (x^{8}+1\right )^{\frac {1}{4}} 2^{\frac {3}{4}} x +\sqrt {2}\, x^{2}+\sqrt {x^{8}+1}}\right )+2 \arctan \left (\frac {2^{\frac {1}{4}} \left (x^{8}+1\right )^{\frac {1}{4}}+x}{x}\right )+2 \arctan \left (\frac {2^{\frac {1}{4}} \left (x^{8}+1\right )^{\frac {1}{4}}-x}{x}\right )\right )}{16}\) | \(165\) |
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Result contains complex when optimal does not.
Time = 10.12 (sec) , antiderivative size = 603, normalized size of antiderivative = 3.97 \[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=-\frac {1}{32} \cdot 2^{\frac {3}{4}} \log \left (-\frac {4 \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 2 \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x + 4 \, \sqrt {x^{8} + 1} x^{2} + \sqrt {2} {\left (x^{8} + 2 \, x^{4} + 1\right )}}{x^{8} - 2 \, x^{4} + 1}\right ) + \frac {1}{32} \cdot 2^{\frac {3}{4}} \log \left (\frac {4 \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 2 \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x - 4 \, \sqrt {x^{8} + 1} x^{2} - \sqrt {2} {\left (x^{8} + 2 \, x^{4} + 1\right )}}{x^{8} - 2 \, x^{4} + 1}\right ) - \frac {1}{32} i \cdot 2^{\frac {3}{4}} \log \left (\frac {4 i \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} - 2 i \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x - 4 \, \sqrt {x^{8} + 1} x^{2} + \sqrt {2} {\left (x^{8} + 2 \, x^{4} + 1\right )}}{x^{8} - 2 \, x^{4} + 1}\right ) + \frac {1}{32} i \cdot 2^{\frac {3}{4}} \log \left (\frac {-4 i \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 2 i \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x - 4 \, \sqrt {x^{8} + 1} x^{2} + \sqrt {2} {\left (x^{8} + 2 \, x^{4} + 1\right )}}{x^{8} - 2 \, x^{4} + 1}\right ) + \left (\frac {1}{32} i - \frac {1}{32}\right ) \cdot 2^{\frac {1}{4}} \log \left (\frac {\left (2 i + 2\right ) \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 4 \, \sqrt {x^{8} + 1} x^{2} - \left (2 i - 2\right ) \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x + \sqrt {2} {\left (-i \, x^{8} + 2 i \, x^{4} - i\right )}}{x^{8} + 2 \, x^{4} + 1}\right ) - \left (\frac {1}{32} i + \frac {1}{32}\right ) \cdot 2^{\frac {1}{4}} \log \left (\frac {-\left (2 i - 2\right ) \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 4 \, \sqrt {x^{8} + 1} x^{2} + \left (2 i + 2\right ) \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x + \sqrt {2} {\left (i \, x^{8} - 2 i \, x^{4} + i\right )}}{x^{8} + 2 \, x^{4} + 1}\right ) + \left (\frac {1}{32} i + \frac {1}{32}\right ) \cdot 2^{\frac {1}{4}} \log \left (\frac {\left (2 i - 2\right ) \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 4 \, \sqrt {x^{8} + 1} x^{2} - \left (2 i + 2\right ) \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x + \sqrt {2} {\left (i \, x^{8} - 2 i \, x^{4} + i\right )}}{x^{8} + 2 \, x^{4} + 1}\right ) - \left (\frac {1}{32} i - \frac {1}{32}\right ) \cdot 2^{\frac {1}{4}} \log \left (\frac {-\left (2 i + 2\right ) \cdot 2^{\frac {3}{4}} {\left (x^{8} + 1\right )}^{\frac {1}{4}} x^{3} + 4 \, \sqrt {x^{8} + 1} x^{2} + \left (2 i - 2\right ) \cdot 2^{\frac {1}{4}} {\left (x^{8} + 1\right )}^{\frac {3}{4}} x + \sqrt {2} {\left (-i \, x^{8} + 2 i \, x^{4} - i\right )}}{x^{8} + 2 \, x^{4} + 1}\right ) \]
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\[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=\int \frac {\left (x^{8} + 1\right )^{\frac {3}{4}}}{\left (x - 1\right ) \left (x + 1\right ) \left (x^{2} + 1\right ) \left (x^{4} + 1\right )}\, dx \]
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\[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=\int { \frac {{\left (x^{8} + 1\right )}^{\frac {3}{4}}}{x^{8} - 1} \,d x } \]
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\[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=\int { \frac {{\left (x^{8} + 1\right )}^{\frac {3}{4}}}{x^{8} - 1} \,d x } \]
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Timed out. \[ \int \frac {\left (1+x^8\right )^{3/4}}{-1+x^8} \, dx=\int \frac {{\left (x^8+1\right )}^{3/4}}{x^8-1} \,d x \]
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